[wp-trac] [WordPress Trac] #63563: Allow `int` type for version in `_WP_Dependency` chain

[WordPress Trac]

#63563: Allow `int` type for version in `_WP_Dependency` chain
--------------------------+-----------------------------
 Reporter:  jeremyfelt    |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:
 Severity:  normal        |   Keywords:  needs-patch
  Focuses:  docs          |
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 `_WP_Dependency()->ver`, `WP_Dependencies()->add()`, `wp_enqueue_style()`,
 `wp_register_style()`, `wp_enqueue_script()`, and `wp_register_script()`
 all have a dependency's version type set as `string|bool|null`.

 A common pattern for providing a script or style's version **number** is
 to use `filemtime()`, which returns an `int`. This can then be flagged by
 phpstan during static analysis as incorrect.

 Because this is a valid way to generate a version number, and there is no
 part of the implementation that prevents the output of the number as a
 string, we should update these to support `string|bool|int|null`.

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Ticket URL: <https://core.trac.wordpress.org/ticket/63563>
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